Heinrich bertsch



. Patented Mar. .8, 1932 I UNITED STATES PATENT OFFICE HEINRICH nnnrson; or mm; emmn massrdnon To H. m. 30m A. G; or

' cfimmnrz, GERMANY, A conrona'rron or GERMANY ommrcAL c'onrr'oum) For. TEXTILE rimsnmo rnociissrs AND mm; LIKE No Drawing. Application' filed May 26, 1928, Serial no. 280,967, at in Germany Kay 27, 1927.

This invention relates to improvements in chemical compounds for textile finishing processes and the like.

When employing the so-called bitter salts or Epsom salts finish,'Turkey red oils are employed of such a character as give no precipitation with magnesium salts. These finishes frequently occasion damage to the vegetable fibres and such damage is disclosed by phenomena similar to those experienced in carbonization, namely the attainment of brittleness and inflammability of the fibres. It

has been determined that such damage arises when the finished material, calico for example, is calendered hot or dried hot.

The basis of this invention is the discovery by the inventor that these phenomena are largely attributable to decomposition of the Turkey red oils, for the sulphuric acid splits out of such oils at rather high temperatures andsuch sulphuric acid then has a deleterious action upon the fibres.

The princi a1 object of my invention is to eliminate t ese defects by the employment, in place of the normal Turkey red oils, of preparations or compounds which are obtained by the treatment of oils, fats or their acids, with sulphuric acid in the presence of organic anhydrides or chlorides or of strong organic acids. The oils, fats or their acids may be referred to generically as fatty matters and the organic acid anhydrides or chlorides, or strong organic acids may be generically referred to as organic acid combinations.

In the Turkey red oil-like products obtained in accordance with this invention, the sulphuric acid is so strongly combined that the finishes obtained with these products do not impair the material even when high temperatures are employed in the calendering and drying operations.

Preparations of castor oil, obtained by treating castor oil with sulphuric acid in the presence of acetic anhydride, may be advantageously employed in finishing processes in accordance with this invention. It is apparent, however, that other fatty matters can be emplo ed and that other organic acid compoun s can be substituted without de-' parting from the-invention as hereinbefore stated and as defined by the appended claims.

.The sulphonated fats or oils employed according to the improved method may be produced for example as follows 300 kilograms of castor-oil-fatty acid, 250 kilograms of water-free butyrlc acid, 500 kilograms of 96% sulphuric acid,

are allowed to act on one another while cooling, the temperature preferably being kept below zero; after reaction has occurred wash ing 0 to 10 C., and neutralization are effected as is usual in the manufacture of Turkey red oil. The production of the sulphonates is effected in a precisely analogous manner, using for example, acid anhydride or propionylchloride or the like. The present application is in part a continuation of my copending ap-' plication Serial No. 198,308, filed June 11, 1927. Y

I claim:

1. Compound suitable for finishing fibres, fabrics and the like, comprising fatty material treated with sulphuric acid in the presence of an organic acid compound.

2. Compound suitable for finishing fibres, fabrics and the like, comprising a fatty acid treated with sulphuric acid in the presence of an organic acid compound.

3. Compound suitable for textile finishing, comprising fatty material treated with sulphuric acid in the presence of organic acid anhydride.

4. Compound suitable for textile finishing compound, comprising castor oil treated with sulphuric acid in the presence of an organic acid compound.

5 Compound suitable for textile finishing compound of the Turkey red oil class, comprising castor oil treated with sulphuric acid in the presence of organic acid anhydride.

6. Compound suitable for finishing fibres, fabrics and the like, comprising fatty material treated with sulphuric acid in the presence of an organic acid halide.

7 Compound suitable for finishing fibres, fabrics and the like, comprising a fatty material treated with sulphuric acid in the presence of an organic acid chloride. 

